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*The Angi rating for Radon Detection And Reduction companies in Rock Port, MO is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Radon Detection And Reduction needs.

*The HomeAdvisor rating for Radon Detection And Reduction companies in Rock Port, MO is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Radon Detection And Reduction needs.

Last update on October 29, 2025

Find Radon detection and reduction specialists in Rock Port

Avatar for National Radon Defense Midwest
National Radon Defense Midwest
4.7(
51
)
Radon Gas - AbatementRadon Gas - Testing

Serving Rock Port, MO and surrounding areas

Approved

In business since 2020

Free estimates

Warranties offered

"RADON SYSTEM WAS NOT WORKING. (Installed by another company years ago). The phone contact was pleasant and efficient. The Technician came on the agreed day and the agreed time: he explained what was wrong, explained the options, then repaired the system so it is working better than it did when first installed."
Exterior Exhaust Fan with Cover
Exterior Exhaust Fan and Discharge
Crawlspace Encapsulation with Radon Mitigation
Cleverly Installed Extraction Point
Interior Exhaust Fan

+15

Response time1 day
44 neighbors recently requested a quote
Recommended by96%of homeowners
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Avatar for SWAT Environmental, Inc.
SWAT Environmental, Inc.
4.5(
52
)
Radon Gas - Abatement

Serving Rock Port, MO and surrounding areas

In business since 1988

Free estimates

Credit card accepted

"I would definitely recommend this company to anyone!!! I hired them and the job was done nicely, Dan O'Brien was the technician who took care of the project and he did an excellent job, he answered all of my questions and explained to me everything related to Radon gas. When he finished setting everything up and the job was completed all the working area looked super clean and the installation looks just like it is part of the house and that has been there forever. This is what I call a Perfect and Complete execution of a Radon gas mitigation project."
Recommended by97%of homeowners
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Radon Detection and Reduction questions, answered by experts

Your radon fan needs to operate 24/7 to be effective. The only time the fan isn't operating is during its replacement. Radon levels in the home can increase within hours if the fan stops working or something obstructs the stack vent. Fortunately, radon systems require no downtime maintenance between fan changes.

While DIY testing is possible, abatement generally requires professional installation to ensure efficacy and meet safety standards.

Many radon fans carry a five-year manufacturer's warranty. That said, your radon fan should last between five and ten years. Regular inspections will ensure the fan is operating properly. Unusual or exceptional noise coming from the fan or indications on your manometer or system monitor can immediately tell you that something is amiss.

Installation typically takes 1-2 days, depending on the system and property layout.

The cost for a radon mitigation system typically ranges from $800 to $1,500, with an average around $1,000. The final price depends on several factors, including the size of your home, the severity of the radon issue, and the type of system required. Your home's foundation type also significantly impacts the cost. For example, sealing and ventilating an unfinished basement might cost around $4,600, while encapsulating a crawl space without a foundation slab can range from $1,500 to $15,000.

The Rock Port, MO homeowners’ guide to radon detection and reduction services

From average costs to expert advice, get all the answers you need to get your job done.

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